Documents / Report
This Defense Intelligence Reference Document from the Defense Intelligence Agency is dated 3 January 2011. It was produced under the Advanced Aerospace Weapon System Applications (AAWSA) Program as part of a series of advanced technology reports. The report asks whether negative mass exists and whether it could be used for propulsion. It concludes that one route might be an ultra-light form of matter that could have gathered at the Moon's center. Reaching it would take a tunnel dug with thermonuclear shape charges.
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UNCLASSIFIED//F811. 8FFll!l*L 1!1!11! t!IIU:!Y 1. Introduction If we extend the law of gravity to negative masses, but hold onto the equivalence of inertial and gravitational masses, we have to distinguish between the following four cases, if a test particle is placed near a gravitational field producing mass (Table 1): Table 1. Interactions Case Gravitational field Mass of test Motion of test producing mass particle particle 1 + + attraction 2 + - attraction 3 - + repulsion 4 - - repulsion Under the principle of equivalence if a negative test mass particle would be placed in the gravitational field of earth, it would not fall upwards, as happens in science-fiction antigravity machines. A test particle, regardless of whether it has positive or negative mass, would there always fall down. It would fall upwards only if placed in the field of a large negative mass. A somewhat different situation arises if both masses, the field producing mass and the mass of the test particle, have the same absolute value but are permitted to have different signs. There we have to distinguish between the cases shown in Figure 1. Ca:;o 2 -0 ---(-) ' l---- ~ o 11 ~ cc<>l(H a t1on 3 O· () . -·----- 4 --(-) 0·._L ____ -~- Figure 1. Forces 2 UNCLASSIFIED/ /F81it 8FFIIIAL ~:!II!! 8HLV
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 43 pages are in the text index: search them above, or from the library's search.